404042434 has 8 divisors (see below), whose sum is σ = 641714508. Its totient is φ = 190137600.

The previous prime is 404042407. The next prime is 404042473. The reversal of 404042434 is 434240404.

It can be written as a sum of positive squares in 2 ways, for example, as 403407225 + 635209 = 20085^2 + 797^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 404042399 and 404042408.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5941767 + ... + 5941834.

Almost surely, 2^404042434 is an apocalyptic number.

404042434 is a deficient number, since it is larger than the sum of its proper divisors (237672074).

404042434 is a wasteful number, since it uses less digits than its factorization.

404042434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11883620.

The product of its (nonzero) digits is 6144, while the sum is 25.

The square root of 404042434 is about 20100.8067997282. The cubic root of 404042434 is about 739.2800607008.

Adding to 404042434 its reverse (434240404), we get a palindrome (838282838).

The spelling of 404042434 in words is "four hundred four million, forty-two thousand, four hundred thirty-four".